<template>
  <div>
    <!-- 面包屑 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>商品管理</el-breadcrumb-item>
        <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片区域 -->
    <el-card>
        <el-row :gutter="20">
            <el-col :span="8">
                <!-- 搜索添加区域 -->
                <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
                    <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
                </el-input>
            </el-col>
            <el-col :span="4">
                <el-button type="primary" @click="goAddpage">添加商品</el-button>
            </el-col>
        </el-row>
        <!-- 商品列表区域 -->
        <el-table :data="goodslist" border stripe>
            <el-table-column type="index"></el-table-column>
            <el-table-column label="商品名称" prop="goods_name"></el-table-column>
            <el-table-column label="商品价格(元)" prop="goods_price" width="95px"></el-table-column>
            <el-table-column label="商品重量" prop="goods_weight" width="70px"></el-table-column>
            <el-table-column label="创建时间" width="140px">
                <template slot-scope="scope">
                    {{scope.row.add_time | dateFormat}}
                </template>
            </el-table-column>
            <el-table-column label="操作" width="180px">
                <template slot-scope="scope">
                    <el-button size="mini" type="primary" icon="el-icon-edit" @click="showEditShop(scope.row.goods_id)">编辑</el-button>
                    <el-button size="mini" type="danger" icon="el-icon-delete" @click="removeById(scope.row.goods_id)">删除</el-button>
                </template>
            </el-table-column>
        </el-table>
        <!-- 分页区域 -->
        <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[1, 2, 5, 10]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total"
        ></el-pagination>
    </el-card>

    <!-- 修改参数对话框 -->
    <el-dialog
        title="编辑商品"
        :visible.sync="editDialogVisible"
        width="50%"
        @close="editDialogClosed">
        <!-- 添加参数的表单 -->
        <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px">
            <el-form-item label="商品名称" prop="goods_name">
                <el-input v-model="editForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
                <el-input v-model.number="editForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
                <el-input v-model.number="editForm.goods_weight" type="number"></el-input>
            </el-form-item>
             <el-form-item label="商品数量" prop="goods_number">
                <el-input v-model.number="editForm.goods_number" type="number"></el-input>
            </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="editShop">确 定</el-button>
        </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
    data(){
        return {
            //查询参数对象
            queryInfo:{
                query:'',
                pagenum: 1,
                pagesize: 10
            },
            //商品列表
            goodslist:[],
            //商品列表总数
            total:0,
            editForm:{

            },
            //编辑对话框的显示与隐藏
            editDialogVisible:false,
            //表单校验规则
            editFormRules:{
                goods_name:[
                    {required: true,message: '请输入商品名称', trigger: 'blur'}
                ],
                goods_price:[
                    {required: true,message: '请输入商品价格', trigger: 'blur'}
                ],
                goods_weight:[
                    {required: true,message: '请输入商品重量', trigger: 'blur'}
                ],
                goods_number:[
                    {required: true,message: '请输入商品数量', trigger: 'blur'}
                ]
            }

        }
    },
    created(){
        this.getGoodsList()
    },
    methods:{
        //根据分页获取对应的商品列表
        async getGoodsList(){
            const {data:res} = await this.$http.get('goods',{
                params:this.queryInfo
            })
            if(res.meta.status !== 200){
                return this.$message.console.error('获取商品列表失败');
            }

            this.$message.success('获取商品列表成功')
            console.log(res.data);
            this.goodslist = res.data.goods
            this.total = res.data.total
        },
        //监听pagesize改变的事件
        handleSizeChange(newSize) {
            //console.log(newSize);
            this.queryInfo.pagesize = newSize
            this.getGoodsList()
        },
        //监听页码值改变的事件
        handleCurrentChange(newPage) {
            //console.log(newPage);
            this.queryInfo.pagenum = newPage
            this.getGoodsList()
        },
        async removeById(goodsId){
             //弹框询问用户是否删除商品
            const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
                showCancalButton: true,
                showConfirmButton:true,
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err => err)

            //如果用户确定，则返回字符串confirm
            //如果用户取消了删除，则返回字符串cancel
            if(confirmResult !== 'confirm'){
                return this.$message.info('已经取消删除')
            } 

            const {data:res} = await this.$http.delete('goods/'+goodsId)
            if(res.meta.status !== 200){
                return this.$message.error('删除失败')
            }
            this.$message.success('删除成功')
            this.getGoodsList()
        },
        goAddpage(){
            this.$router.push('/goods/add')
        },
        async showEditShop(id){
            const {data:res} =await this.$http.get(`goods/${id}`)
            if(res.meta.status !== 200){
                return this.$$message.error('获取商品信息失败')
            }
            this.editForm = res.data
            this.editDialogVisible = true
            console.log(this.editForm);
        },
        //监听编辑对话框的关闭事件
        editDialogClosed(){
            this.$refs.editFormRef.resetFields()
        },
        editShop(){
            console.log(this.editForm)
            this.$refs.editFormRef.validate(async valid => {
                if(!valid) {
                    return this.$message.error('不符合校验规则')
                }
                const {data:res} = await this.$http.put(`goods/${this.editForm.goods_id}`,{
                    goods_name:this.editForm.goods_name,
                    goods_price:this.editForm.goods_price,
                    goods_number:this.editForm.goods_number,
                    goods_weight:this.editForm.goods_weight,
                    goods_cat:this.editForm.goods_cat
                })
                console.log(res);
                if(res.meta.status !== 200){
                    return this.$message.error('商品信息更新失败！')
                }
                this.$message.success('商品信息更新成功！')
                this.getGoodsList()
                this.editDialogVisible = false

            })
            
        }
    }
}
</script>

<style lang="less" scoped>

</style>